Specifically designed to work seamlessly with the Octagon 20 advance digital incubator this humidity pump includes a peristaltic pump and an external water reservoir which eliminates the chances of water in the incubator harboring bacteria. The unit stands beside the incubator and is connected to it by an electrical lead and a flexible tube for water supply. Humidity settings are controlled directly from the incubator's intuitive digital menu and the achieved relative Humidity (RH) is continuously shown on the incubator's digital display.The Octagon 20 advance incubator coupled with the Humidity Pump effectively maintains the humidity level precisely at the level the user sets irrespective of changes in room humidity and so overcomes problems that can commonly lead to eggs failing to hatch – especially in the latest stages of incubation. The Humidity Pump module can be purchased as part of the Octagon 20 Advance EX model or separately as an upgrade from Octagon 20 Advance to the Octagon 20 Advance EX.Dimension – 5 x 5 x 3 in.Item Weight – 2 lbs.